To mark the 200th anniversary of the birth of rail, Britain's Railway Empire in Colour reveals the extraordinary story of how Britain gave railways to the world – from the first tentative experiments with steam power, through the boom years at home, to the exporting of this new technology to every corner of the globe. Using leading experts and enthusiasts, including TikTok trainspotter Francis Bourgeois, plus extensive newly colourised archive, the truly revolutionary invention and impact of the locomotive is explored.